/Engine/Plugins/Compositing/Composure/Source/ComposureLayersEditor/Public/ICompElementManager.h
Adds/Enables/Disables a media-capture output pass for the specified element. Adds & enables a media-capture pass if one doesn't already exist. Just enables/disables if one already exits.
void ToggleMediaCapture ( const [FName](API\Runtime\Core\UObject\FName) & ElementName )